Its in new stonemason sets. it's in older content converted from poser versions to ds versions.

if you're seeing texture gaps chances are it's a uwrap.

open the model in the wrench room select the uvs icon. select polies on the model with the gaps. on model tab is a tickbox for uwrap.

there is also a plugin from Sparrowhawke that will help tick the uwrap making it easier to deal with.

another thing to be wary of are the geograft shoes.

geografts don't merge with the mesh in Carrara. It punches a whole in the mesh, messing up the uvs. Results in weirding looking artifacts in textures.

one workaround is to edit the dsf file of the shoes. delete the geograft section in the file.

be wary of rigid groups in clothing items. lumpy autofits.